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| author | Yan, Zheng <zyan@redhat.com> | 2017-09-22 09:26:57 +0800 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2017-10-02 16:18:01 +0200 |
| commit | 9f4057fc937f200f000dbc378c5c3e37d45e31dc (patch) | |
| tree | 7437f82c8565c8e404df28bb84c1a53ef159d4d7 /fs/ceph/snap.c | |
| parent | 9e66317d3c92ddaab330c125dfe9d06eee268aff (diff) | |
| download | linux-9f4057fc937f200f000dbc378c5c3e37d45e31dc.tar.gz linux-9f4057fc937f200f000dbc378c5c3e37d45e31dc.tar.bz2 linux-9f4057fc937f200f000dbc378c5c3e37d45e31dc.zip | |
ceph: properly queue cap snap for newly created snap realm
commit 3ae0bebc "ceph: queue cap snap only when snap realm's
context changes" introduced a regression: we may not call
queue_realm_cap_snaps() for newly created snap realm. This
regression allows unflushed snapshot data to be overwritten.
Link: http://tracker.ceph.com/issues/21483
Signed-off-by: "Yan, Zheng" <zyan@redhat.com>
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/ceph/snap.c')
| -rw-r--r-- | fs/ceph/snap.c | 8 |
1 files changed, 3 insertions, 5 deletions
diff --git a/fs/ceph/snap.c b/fs/ceph/snap.c index 1ffc8b426c1c..7fc0b850c352 100644 --- a/fs/ceph/snap.c +++ b/fs/ceph/snap.c @@ -374,12 +374,10 @@ static int build_snap_context(struct ceph_snap_realm *realm, realm->ino, realm, snapc, snapc->seq, (unsigned int) snapc->num_snaps); - if (realm->cached_context) { - ceph_put_snap_context(realm->cached_context); - /* queue realm for cap_snap creation */ - list_add_tail(&realm->dirty_item, dirty_realms); - } + ceph_put_snap_context(realm->cached_context); realm->cached_context = snapc; + /* queue realm for cap_snap creation */ + list_add_tail(&realm->dirty_item, dirty_realms); return 0; fail: |